Stump-puller



(No Model.)

J. DUNN.

STUMP PULLER.

" Patented Nov 22,1881.

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4o jointed to the lever E at H, Fig. 1.

Entree dramas Harem rrtoa.

JAMES DUNN, OF CLEVELAND, OHIO.

STUMP-PULLER.

SPECIFICATION forming part of Letters Patent No. 249,747, dated November 22, 1881.

' Application filed August 11, 1881. (No model.)

To all whom it may concern Be it known that I, JAMES DUNN, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented a certain Improved Stump- Puller; and I do hereby declare the following to be a full and complete description thereof, reference being had to the annexed drawings, making part of this specification, in which- Figure l is a side view; and Fig. 2 an edge View of Fig. 1, representing only the yoke, ratchet, and sprocket-wheel, the levers and pawls being omitted.

Like letters refer to like parts in the views.

The object of this invention is to render it efficient for the extraction of stumps, and having strength for all the purposes for which it is designed, and at the same time so constructed as to be rendered portable and easy of operation.

The following specification will more fully describe the construction and operation of the said invention in connection with the drawings, in which-- A represents the yoke, consisting of two side pieces, a a, secured together by means of studs B 0 D, which are shouldered, so as to allow the side pieces or straps to fit down on the shoulders, the studs being riveted on the outside, or secured by screw-nuts on the ends of the studs, whereby the yoke is firmly' and securely made. The yoke may be so forged as to dispense with the studs O D by bending or forming that part of the strap at D so as to have the straps ca and the end at D all in one piece.

Between the yoke is pivoted the lever E upon the wrist F, which is securely held in the side pieces, a (1., in a manner similar to the studs before mentioned. The ratchet G is The end of the lever is provided with a socket at I, so that the various lengths of bars may be used, according to the purpose or power required. The pawl J is loosely hung upon the wrist F.

Upon the shaft L is secured the ratchetwheel K, which shaft is journaled in the sides a a of the yoke, as seen, Fig. 2. Upon this shaft is also secured the sprocket-wheel M.

The chain N an d sprocket-w heel are constructed with relation to each so as to operate conjointly.

The machine may be made to suspend from a derrick, or be connected with any suitable frame-work for raising heavy bodies, and of various dimensions, according to the purpose required.

It will be seen in Fig. 2 that the shape of the sprocket-wheel is designed to receive the form of the links, there being alternate projections c and depressions 1) corresponding with the alternate position of the links in the wheel, as seen in Fig. 1.

In the ordinary operation of the machine it may be connected at B with a derrick or other suitable frame-work, and in extracting stumps the chain N is secured to the stump in any suitable way. The power is then applied to the arm of the lever E, which, on forcing down said lever, causes the ratchet-wheel to revolve by the intervention of the ratchet G, which engages the ratchet-teeth, causing the wheel to turn in the direction of the arrow, raising the end N of the chain and the stump or body to which it is connected. A reverse motion or action of this operation may be produced by prcssin g upon the lever E sufficiently to withdraw the pawl J from the ratchet-teeth by pulling the cord P. Then by raising the lever the weight or body at N will descend, raising the opposite end of the chain. In this way, by means of the pawl J and ratchet Gr, operated as described, a body may be lowered or raised. In pulling out a stump the power which is exerted upon the ratchet-wheel by the lever and ratchet G is retained or held by the pawl J, which engages the teeth of the ratchet-wheel and holds it from reacting while the lever and ratchet are being raised to take another bite. The principle of operation is essentially the same in raising and lowering.

I am aware that various devices for raising and lowering bodies by means of levers, pawls, andratchetshavebeenheretoforeused. Hence 1 do not claim these members separately in the herein-described machine; but what is considered as new is the combination. and arrangement of the several devices specified to produce a stump-puller conveniently arranged with sufficient power for all ordinary purposes.

What I claim as my invention, and desire to secure by Letters Patent, is

In stump-pullers, the combination of the lever E, having pivoted to it the feeding'pawl G, supplied with a detaching cord or rod, the detaining-pawl J, having a levenarm and decaching cord or rod, and the ratchet-wheel of 10 a hoisting apparatus, as described, all substantially for the purpose set forth.

In testimony whereof I aflix my signaturc in presence of two witnesses.

JAMES DUNN. Witnesses:

J. H. BURRIDGE, W. F. STEADMAN. 

